CVE-2023-20593 Information disclosure in 2nd Gen AMD EPYC™ Processors
Medium 5.5
Published
Updated
Check this codebase for CVE-2023-20593 and fix it if it is affected.
What it is: CVE-2023-20593 is a medium-severity vulnerability in Amd Epyc 7232p Firmware, published on 24 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-20593 exists.
Affected product: Amd Epyc 7232p Firmware. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2023-20593/ (Markdown: https://insights.sbomify.com/CVE-2023-20593/index.md)
An attacker can potentially access sensitive information from AMD Zen 2 CPUs due to specific microarchitectural circumstances.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-20593?
CVE-2023-20593 is a medium-severity vulnerability in Amd Epyc 7232p Firmware, published on 24 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue in “Zen 2” CPUs, under specific microarchitectural circumstances, may allow an attacker to potentially access sensitive information.
Weakness: CWE-209
Which versions are affected by CVE-2023-20593?
It affects 71 products.
Linux distribution packages (40)
iwl100-firmware AlmaLinux:8 | All versions | 39.31.5.1-117.el8_8.1.alma.1 |
iwl1000-firmware AlmaLinux:8 | All versions | 1:39.31.5.1-117.el8_8.1.alma.1 |
iwl105-firmware AlmaLinux:8 | All versions | 18.168.6.1-117.el8_8.1.alma.1 |
iwl135-firmware AlmaLinux:8 | All versions | 18.168.6.1-117.el8_8.1.alma.1 |
iwl2000-firmware AlmaLinux:8 | All versions | 18.168.6.1-117.el8_8.1.alma.1 |
iwl2030-firmware AlmaLinux:8 | All versions | 18.168.6.1-117.el8_8.1.alma.1 |
iwl3160-firmware AlmaLinux:8 | All versions | 1:25.30.13.0-117.el8_8.1.alma.1 |
iwl3945-firmware AlmaLinux:8 | All versions | 15.32.2.9-117.el8_8.1.alma.1 |
iwl4965-firmware AlmaLinux:8 | All versions | 228.61.2.24-117.el8_8.1.alma.1 |
iwl5000-firmware AlmaLinux:8 | All versions | 8.83.5.1_1-117.el8_8.1.alma.1 |
iwl5150-firmware AlmaLinux:8 | All versions | 8.24.2.2-117.el8_8.1.alma.1 |
iwl6000-firmware AlmaLinux:8 | All versions | 9.221.4.1-117.el8_8.1.alma.1 |
iwl6000g2a-firmware AlmaLinux:8 | All versions | 18.168.6.1-117.el8_8.1.alma.1 |
iwl6000g2b-firmware AlmaLinux:8 | All versions | 18.168.6.1-117.el8_8.1.alma.1 |
iwl6050-firmware AlmaLinux:8 | All versions | 41.28.5.1-117.el8_8.1.alma.1 |
iwl7260-firmware AlmaLinux:8 | All versions | 1:25.30.13.0-117.el8_8.1.alma.1 |
libertas-sd8686-firmware AlmaLinux:8 | All versions | 20230404-117.git2e92a49f.el8_8.alma.1 |
libertas-sd8787-firmware AlmaLinux:8 | All versions | 20230404-117.git2e92a49f.el8_8.alma.1 |
libertas-usb8388-firmware AlmaLinux:8 | All versions | 2:20230404-117.git2e92a49f.el8_8.alma.1 |
libertas-usb8388-olpc-firmware AlmaLinux:8 | All versions | 20230404-117.git2e92a49f.el8_8.alma.1 |
linux-firmware AlmaLinux:8 | All versions | 20230404-117.git2e92a49f.el8_8.alma.1 |
iwl100-firmware AlmaLinux:9 | All versions | 39.31.5.1-135.el9_2.alma.1 |
iwl1000-firmware AlmaLinux:9 | All versions | 1:39.31.5.1-135.el9_2.alma.1 |
iwl105-firmware AlmaLinux:9 | All versions | 18.168.6.1-135.el9_2.alma.1 |
iwl135-firmware AlmaLinux:9 | All versions | 18.168.6.1-135.el9_2.alma.1 |
iwl2000-firmware AlmaLinux:9 | All versions | 18.168.6.1-135.el9_2.alma.1 |
iwl2030-firmware AlmaLinux:9 | All versions | 18.168.6.1-135.el9_2.alma.1 |
iwl3160-firmware AlmaLinux:9 | All versions | 1:25.30.13.0-135.el9_2.alma.1 |
iwl5000-firmware AlmaLinux:9 | All versions | 8.83.5.1_1-135.el9_2.alma.1 |
iwl5150-firmware AlmaLinux:9 | All versions | 8.24.2.2-135.el9_2.alma.1 |
iwl6000g2a-firmware AlmaLinux:9 | All versions | 18.168.6.1-135.el9_2.alma.1 |
iwl6000g2b-firmware AlmaLinux:9 | All versions | 18.168.6.1-135.el9_2.alma.1 |
iwl6050-firmware AlmaLinux:9 | All versions | 41.28.5.1-135.el9_2.alma.1 |
iwl7260-firmware AlmaLinux:9 | All versions | 1:25.30.13.0-135.el9_2.alma.1 |
libertas-sd8787-firmware AlmaLinux:9 | All versions | 20230310-135.el9_2.alma.1 |
linux-firmware AlmaLinux:9 | All versions | 20230310-135.el9_2.alma.1 |
linux-firmware-whence AlmaLinux:9 | All versions | 20230310-135.el9_2.alma.1 |
netronome-firmware AlmaLinux:9 | All versions | 20230310-135.el9_2.alma.1 |
iwl100-firmware Red Hat:rhel_aus:8.2::baseos | All versions | 0:39.31.5.1-100.el8_2.1 |
iwl1000-firmware Red Hat:rhel_aus:8.2::baseos | All versions | 1:39.31.5.1-100.el8_2.1 |
Products include Amd Athlon Gold 7220u Firmware, Amd Epyc 7232p Firmware, Amd Epyc 7252 Firmware, Amd Epyc 7262 Firmware, Amd Epyc 7272 Firmware, Amd Epyc 7282 Firmware and 65 more.
How do I fix CVE-2023-20593?
Apply the vendor's patch.
Is CVE-2023-20593 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-20593 exists.
Public exploit code: 2 proofs of concept on GitHub.
Sources
Also known as ALPINE-CVE-2023-20593, ALSA-2023:5068, ALSA-2023:5245, BELL-CVE-2023-20593, CLSA-2023-1692108914, CLSA-2023-1692109552 and 25 more.